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Unread 11-01-2018, 11:27 AM   #132
wwhitney
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Join Date: Dec 2015
Location: Berkeley, CA
Posts: 1,092
The mortar thickness will only be half the nominal notch depth if you comb out the mortar with the trowel at a 90 degree angle. For a 45 degree angle, further multiply by 0.70 (sqrt(2) / 2).

I haven't otherwise checked your math.

Cheers, Wayne
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Wayne
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